I am a design student, studying in South Africa and need help on a current project.
I am designing a barbecue that doubles as a small fireplace. the idea is that once the fire is out the fireplace can be taken indoors to warm the house.
So far my design can be simply put as 2 metal cylinders one inside the other - now I want to fill the gap with a material that has a high heat retention. the idea being that when the fire is burning (cooking food) the heat will be absorbed by this material, then once the fire is out the material will start to radiate the heat.
I have had a few suggestions from my lecturers including, sand, brick, stone, salt (NaCl) and ceramic grog.
I was wondering if there was any other material that could be better at this.
I have also heard that water is the best at this but I don't think that it will work for my application as the area I will be putting the material is sealed and if water will boil and possibly explode.
Any help will be appreciated!!!
Edited by mhasson, 16 May 2011 - 11:04 AM.